Island



NITED rains arenr rricn.

CHARLES B. MAXSON, OF \VESTERLY, RHODE ISLAND.

SHEET-DELIVERY APPARATUS FOR PRlNTlNG MACHlNES.

SPECIFICATION forming part of Letters Patent No. 334,964, dated January 26, 1886.

Application filed July 30, 1885. Serial No. 173,085. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES B. MAXsoN, a citizen of the United States, residing at VVesterly, in the county of Washington and State of Rhode Island, have invented new and useful Improvements in SheetDelivery Apparatus for Printing-lilachines, of which the following is aspecification.

This invention relates to cylinder printingpresses; and it has for its object to provide novel means for taking the printed sheets directly from the impression-cylinder and depositing them, printed side up, upon a receiving-table directly behind the impression-cylindor, without the employment of a vibrating flv.

The object of my invention I accomplish by the combination and arrangement of devices hereinafter described and claimed, reference being made to the accompanying drawings, in which Figure 1 is a side elevation of a portion of a cylinder-press embodying my invention, and Fig. 2 an end elevation of the reels and their snpportingframe.

In the drawings. the letter A designates the impressioncylinder, and B is the type-bed.

G is one of a series of reels which are mounted at suitable distances apart on a common shaft, D. Beneath the reels is the receiving-table E, from which extend stops a up between the reels. The reehshaft is geared together with the shaft of the impression-cylinder in such a manner that the reels and the impression-cylinder revolve at the same superficial velocity. i

In the example shown by the drawings th diameter of the reels 0 is two-thirds of the diameter of the impression-cylinder, and consequently the reels will make one and a half revolution to each revolution of the impres sion-cylinder. Theimpressioncylinderisprovided with a set of grippers, a, which are operated by means such as are usually employed for this purpose, and the reels 0 are provided with two sets of delivery-grippers, b b,which are situated diametrically opposite to each other and operated by suitable mechanism. At the moment the grippers a pass the point of contact between the reels and the impressioircylinder they are thrown open, and at the same time one set of the grippers b b are made to close upon the printed sheet just liberated by the grippers a, and to carry said sheet over the reels 0.

In the example shown in the drawings, the delivery-grippers b have carried a printed sheet over the table E, and they have arrived at the point where they are opened, and when this is done the printed sheet drops down, with the printed side up, upon the table E. The grippers a carry a fresh sheet, and after the same has been printed upon, the deliverygrippers b take this sheet from the impressioncylinder and deliver it upon the table E.

By referring to the drawings it will be seen that when the delivery-grippers have reached the point where they are opened the printed sheet carried by them is in such a position that it is not liable to adhere to the reels 0, and that it readily drops down upon the table E by its own gravity. In order to accomplish this, it is necessary to make the diameter of the reels at least equal to two-thirds of the diameter of the impression cylinder, and if this proportion is selected two sets of deliverygrippers are required, which are brought alternately into action. If the diameter of the reels is made equal to the diameter of the impression-cylinder, one set of deliverygrip pers will answer; but the proportion shown in the drawings is preferable, because it requires less room. If the diameter of the reels is made equal to one-half of the diameter of the impressioncylinder, an economy in space is effectedand only a single set of grippers are required on the reels; but in that case additional means are required to liberate the printed sheet from the reels, as will be explained in another application for a patent bearing even date with this.

The great advantage of my invention is that it enables me to dispense with the fly and to deposit the printed sheets upon the receiving table with the printed side up close behind the impression-cylinder.

The grippers b b are operated to grasp and release the leading ends of the sheets at the proper time in any suitable manner-that is, by rock-arms g g, acted on by a stationary ca1n,f, to close the grippers, the latter being opened by springs (not deemed necessary to illustrate) if the shape of the cam permits.

What I claim as new, and desire to secure by Letters Patent, is

The combination, with the impressioncylinder A of a printing-press having sheetholding grippers a, of a series of circular reels, O, mounted on a shaft, D, common to all, and having their peripheries arranged in close proximity to the periphery of the impressioneylinder, to receive the printed sheet directly from the latter, said reels revolving with the same superfioialyelocity as the cylinder, a series of grippers located, respectively, at the peripheries ofthe said reels and carried around 

